Composite roll



Jan. l0, 1928.

l 1,655,886 G. BAEHR COMPOSITE ROLL Filed March 50, 1923 2 Sheets-Sheet 1 lNvE-NTOR Jan. 10, 1928.

G. BAEHR COMPOSITE ROLL Filed March 50. 1923 2 Sheets-Sheet 2 A WlTNE S S ss INVENTQR Patented Jan. 10, 1928.

UNITED .STATES GEORGIE BAEHR, `Oll IR-Willi, PENNEYLVANA.

oolnrosrrn noni..

i Application `filed March`30, 1923. `serial No. 628,8G3l.

This invention relates to Acomposite rolls. More 'particularly it relates to composite rolls having removable forming segments adapted to produce shapes of varying cross section at different points of their length.

The objects of the invention are to provide a composite roll structure in which the forming; segments may be securely `clamped upon 'the roll body and held readily .in position., in which a forming, `groove may be made Ain the outer surface of individual segments or between meetingedges of cooperate ing pairs ol segments, and these segments arranged in a variety of different combinations, whereby to roll `a variety ot shapes, by merely substituting?, dillcrently grooved segments. Another object is to provide a structure wherein two dillerent forms .oli alignedgrooves may be used, with a smooth and regular transition between the grooves, this transition being 'lorined by removable segments. Another object is to provide means `for clamping; the removable parts together upon the `roll Abody in such manner that the clamping device maybe readily released `when it is desired to disassemble the roll, and `securely `held in place while the roll Iis in operation. p

nother object is Ato `:roll at one continuous operation in continuous series a plurality of kshapes having two or more different cross Isections. Another `object is to roll bars having'circdlar ends and an elliptical or `flattened body between. Other objects and advantages will appear from the Aliollowing1 specification. i

lleierring 'to the drawings, Fig. l `is a side elevation-olf a composite roll `adapted to lonrn bars having an elliptical jbody `portion with circular ends, and illustrating the means ol changinglthe groove over from one shape to the other by means of transition segments; Fig. 2 is an axial section through the rdllol Fig. il, showing1 a single series of aligned .segments forming1 a groove at the lett, and parallel cooperating series torming agroove at the right; Fig. 3 shows the bar having 4round ends and a Aflattened body as `termed by the rolls of Figs. l and 2; Fig. d `is a cross section through a pair olf cooperating rolls, such as those `illustrated in Figs. land 2, showing; "the torina-tion of a bar similar to that "illustrated in lligg. 3; Figs. `5 and 16 are sections of the bar upon the lines "iV-V and VL-VI, respectively; Fig. 7 "shows `a pair of rolls adapted to lorm cold chisels or punches, such .as illustrated in Fin'. il; Figi'. 9 shows rolls adapted to :torni crowbars, such as illustrated in Fig. il).

` ln my prior `Patent lilo. 1,289,602, l have illustrated and described a composite roll einiilin' in many respecte to that herein described, and have claimed certain features thereof. rlhe present application claims certain additional features., divisible trom those claimed in the said patent, and noodilications ol the structure not therein describe-d.

p ljrior to my invention it was not,.so far as l am aware, practical to roll at one operam 'tion bars having' a round portion and an elliptical or flattened portion. "Where it was desired to h ave .such a structure, as tor example in the formation ot concrete rein- 'forcing bars, etc., or ol tie rods tor street l@ railways, which rods are ordinarily made with round. ends adapted to be inserted. through the web ott the rails, and to be threaded to receive locking' nuts, `and lianfiiro,

a .flattened or elliptical body portion be tween the circular ends, it was the prior practice to `roll such bars as rounds, `and then to put them through a secondrolling operation which dattened the middle portions. ,lly the construction described and illustrated in this application, based upon my prior composite roll construction, l am enabled to roll such shapes continuously from a blank, in finished form, ready to be cut into lenuths and threaded. `Articles having; a similar structure have been rolled bythe use oi my invention in large quantity for use as the braces oiE aeroplanes, the intermediate portionl olf these braces being elliptical, or stream-line.` to alliord minimum, resistance to `air pressure7 the ends being,r round so to ,tolte threads ,tor locking; nuts. Likewise, by the `use ol this invention l have been able to roll ui'tomobile axles, crow-bars, chisels and such articles havingr varying cross sections. All of this :will be plain from a consideration oil the specifica tion and drawings.

The construction ccnnprises a roll body l havina the usual necks 2 and wobblers 3 :for lhttinn` into a roll. housil'infy and. drivingr mechanism. llt one end ot tl'ic roll body 'there is provided an alnltnient d, `the inner educ oli which is imdercut, forming; a bevn eled `collar as `clearly illustrated in Fig. ilhe other end ot the roll has threads (l, adapted to be engaged by an interiorly threaded nut 7, which is surrounded by a brake band 8, which may be tightened by a hand wheel 9. By this construction when the roll is in its housing,lby tightening the brake on the nut 7, it; may -be readily turned down by rotation of the roll into the position illustrated in Figs. 1 andV 2, and

so used tov clampthe movable members described below in position upon the roll.

Cooperating withthe fixed undercut collar 5 are undercut slidable rings 10, 11 and 12, adapted toslip on the-roll body before the nut 7'is positioned. The ring 10 has its undercut beveled face opposite to that of the collar, and the rings 11 and 12 have theirV faces opposite as clearly shown in I' Fig. 2. A series of segments 13 are positioned endV to end around the roll body and seated thereon andtheir outer beveled faces 141 and .15 areengaged by the undercut collar5 and the slidable ring 10, all as clearly l illustrated at the left of 2. At the right of that ligure, two series of'cooperating segments 16and 17 are shown, positioned side l rings 10 and 11. The function of this ring is to eXpandVto a. greater extent than the other metal of the members described so as toftake up any looseness that might develop by. reason of expansion due to heat of the various parts when the roll is in use.

' A plurality of screws 20 extend through the4 nut 7,.para1lelto the axis. of the roll.

These screws have -an exterior non-circular head, and their linner endbears against the ring 12.y When the roll 1s assembled, the

Y segments 13, 16 and 17 having been placed in vposition and being engaged by the rings and collar above described, thev locking nut 7 is turned down'on the roll body until all of the segments and rings are driven against the abutment 4.' Holding of the members 7 withthe brake mechanism described and they driving of the rolls by the ordinary driving mechanism will secure and firmly clamp all ofthe parts together and hold them in rigid position during the rolling operation. Due to thelarge surface contact of the member 7 and ring 12, whenthis method of tightening is used it is sometimes difficult to release the ring'7 when it is desired to disassemble the composite roll.V This is especially true when the roll is hot. and the members have all been additionally tightened by expansion of the ring'19. Consequently, I-

prefer toV run the locking member 7 down to an initial clamping position, and then to make the final tightening by the screws 20. They act as set screws to hold the member 7 in place regardlessof vibration in use, and

they secure a uniform take up by permitting individual adjustment. They bear upon the ring 12 at a number of points, and therefore drive the segments and rings together uniformly. Owing to their comparatively small surface contact with the ring 12 it is very easy to tighten 'them up, and release them with an ordinary wrench, and by this constructionV I avoid the serious diiiiculty of sticking sometimes experienced where the member 7 is used to secure the final clamping action.

It will be observed that the segments 13 as illustrated at the top of Fig, 1 have a semi-circular groove 21 therein, while at the lower part of the roll the segments 13 have anelliptical or flattened groove 21". The intermediate segment 13", which I call a transition' segment, has a groove 21b that is elliptical at its lower end, so as to register with the groove 21 of the segments 13, and at its upper end. the groove is semicircular. to register with groove 21. The groove in segment 13h, between its ends, merges uniformly from the semi-circular to elliptical form, and thus produces a smooth transition between the two different forms of groove.

The cooperating pairs of segments 16 and 17 at the right of the roll form an exactly similar groove and transition portion, the difference being that in this latter form two segments are clamped together to make a groove between, instead of having the groove formed in the face of a single segment, as at the left. The transition segments are marked 16b and 17 b, forming a transition groove 18", and the segments forming the elliptical port-ion 18"L of the groove are marked 16a and 17u respectively. The grooves are so proportioned in the different forms of segments that the bar formed therein is of substantially equal cross-sectional area at all points.

By this construction, I can roll a bar having a length equivalent to the circumference of the roll, and can make any portion 23 of that length semi-circular, and the remaining portion 24 iattened or elliptical, with a smooth transition portion 25 between, of equal strength and area on any cross-section, b v simply varying the relative number of segments 13`and 13a. As illustrated in Fig. 4 a continuous blank may be fed into the rolls and a number of the bars illustrated in Fig. 3 are produced, the individual bars there illustrated being secured by cutting through the middle portion of the round parts of the rolled product.

In Fig. 7 I have illustrated special segments 26, having grooves 27 therein adapted to form an octagonal body 28 of a chisel, and joining segments 29 adapted to form the cutting head 30 of the chisel, while still another shape of segment 31, forms the end 32 of the chisel, and the transition from it to the head 30 of the succeeding one.

In Fig. 9 there is illustrated an arrangement comprising segments adapted to form a crow-bar having a head 33, a circular or square portion 34, a hexagonal or octagonal portion 35, and a beaded handle terminal portion 36. Y

The articles illustrated in Figs. 7 to 10 inclusive illustrate the variety of shapes that may be formed by the use of my composite roll with segments comprising grooves of different shape, and with transition segments adapted to merge from one form of groove into another.

The advantage of being able to substitute segments of different shapes and to make up different combinations of shaped segments upon the same roll body, by merely substituting segments, is a decided advance in this art and has rendered possible the rolling of shapes which were formerly necessarily forged.

It will be understood. that no attempt has been made to have the drawings show the various parts in correct scale or relative proportions. For example the roll bodies l and la are illustrated as very small compared to lthe product rolled. rlhis is done to permit a clear illustration of the arrangement of parts. In practice the roll body would be many times larger than here illustrated,

comparative to the other parts, and other proportions also materially different.

It is also to be understood that the segmental facing members may be made much longer relative to the circumference of the roll than as here shown. The number and size will vary with the particular product to be rolled.

I claim:

l. A composite roll comprising a spindle having a fixed undercut collar at one end, segmental facing members arranged end to end around and retained against the spindle by said collar and by a slidable undercut ring adapted to Vengage the facing members, said facing members having a forming groove in their outer faces, the groove so formed being of dierent contour in differ cnt segments, and means to drive the undercut ring towards the collar whereby to clamp the segments upon the spindle.

2. A composite roll comprising a spindle, segmental facing members arranged end to end around the roll and seated on the spi`ndlc, said facing' members having a forming groove in their outer faces, the groovesso formed being of different contour in differ ent segments, and means to clamp the segments upon the spindle.

In testimony whereof, I sign my name.

GEORGE BAEHR. 

